The phrase "a certain difference between" is correct and usable in written English.
You can use it to indicate a distinction between two items, such as in the sentence "There is a certain difference between being confident and being cocky."
(2) there is a certain difference between linear velocity equations and power-law velocity equations, and the power-lower equations are generally more close to measured data than linear equations except for class E in Japan and class D in California.
A certain difference between the histograms in the area 0.8 < Kr < 0.95 is observed.
The 3 year and 5 year overall survival (OS) rate are also displayed in Tables 2 and 3, where there was a certain difference between the CRT plus surgery group and the surgery alone or CT plus surgery groups.
Both controls and patients showed an increasing absolute (i.e. global) proximal displacement of the center of the humeral head with increasing active and passive abduction of the glenohumeral joint and humerus, without any certain difference between the groups.
Methods A and B only required separation of the normalized ratios of the three possible genotypes (wild-type, heterozygote and mutant) within a certain difference (d) between the minimum and maximum ratios observed for each respective genotype.
A certain difference is observed between OC and OS medium, the cells cultivated with OS medium expressed in a higher extent bone specific non-collagenous proteins OP, ON and OC (Fig. 6a, b, c).
A certain difference in membrane permeability between presumed identical probes (i.e. the same product) as described by others and observed in this work, will also contribute to RR variation [ 19].
The existence of these amino acids has created an additional gap among aligned PabHLH motifs, indicating certain difference between H. saltator and other insect species.
Then, for example, the identity combinator I of type (A → A → A) → A → A → A is not the same as the identity combinator I of type ((B → B) → B) → (B → B) → B. The two styles of typing have quite a lot in common, but there are certain differences between them.
The two architects were near-contemporaries, and although there are certain differences between their styles, they also have a great deal in common: a love for stage effects, a willingness to borrow from almost any historical source, a heroic determination to ignore the demands of good taste and restraint.
Although certain differences between the keratin expression patterns of squamous cell carcinomas from different sites of origin have been noted, it is not yet possible to use keratins as specific site markers in cases of unclear metastases (Moll 1998).
